CN109896628A - AOA(PD-ANAMMOX) the apparatus and method of technology of biological membrane advanced nitrogen - Google Patents
AOA(PD-ANAMMOX) the apparatus and method of technology of biological membrane advanced nitrogen Download PDFInfo
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- CN109896628A CN109896628A CN201910189777.XA CN201910189777A CN109896628A CN 109896628 A CN109896628 A CN 109896628A CN 201910189777 A CN201910189777 A CN 201910189777A CN 109896628 A CN109896628 A CN 109896628A
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- anoxia
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 239000012528 membrane Substances 0.000 title claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 14
- 206010002660 Anoxia Diseases 0.000 claims abstract description 157
- 241000976983 Anoxia Species 0.000 claims abstract description 157
- 206010021143 Hypoxia Diseases 0.000 claims abstract description 157
- 230000007953 anoxia Effects 0.000 claims abstract description 157
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000010992 reflux Methods 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 13
- 238000005273 aeration Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims description 26
- 238000012856 packing Methods 0.000 claims description 24
- 239000004743 Polypropylene Substances 0.000 claims description 21
- 229920001155 polypropylene Polymers 0.000 claims description 21
- -1 polypropylene Polymers 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 16
- 239000010802 sludge Substances 0.000 claims description 10
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 230000001376 precipitating effect Effects 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000011800 void material Substances 0.000 claims description 2
- BDKZHNJTLHOSDW-UHFFFAOYSA-N [Na].CC(O)=O Chemical group [Na].CC(O)=O BDKZHNJTLHOSDW-UHFFFAOYSA-N 0.000 claims 1
- 229910021529 ammonia Inorganic materials 0.000 claims 1
- 239000010865 sewage Substances 0.000 abstract description 23
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 abstract description 4
- 238000006396 nitration reaction Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 235000017281 sodium acetate Nutrition 0.000 abstract description 4
- 239000001632 sodium acetate Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 10
- 229910002651 NO3 Inorganic materials 0.000 description 5
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 5
- 241001453382 Nitrosomonadales Species 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 238000011020 pilot scale process Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000010840 domestic wastewater Substances 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- PDNNQADNLPRFPG-UHFFFAOYSA-N N.[O] Chemical compound N.[O] PDNNQADNLPRFPG-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 230000000703 anti-shock Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001651 autotrophic effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The apparatus and method of AOA (PD-ANAMMOX) technology of biological membrane advanced nitrogen belong to field of biological sewage treatment.Its device includes raw water box, anoxia cell (A), aerobic lattice (O), postposition anoxia cell (PD-ANAMMOX), carbon source dosing tank.First, raw water and the nitrification liquid of reflux enter anoxia cell, make full use of carbon source in raw water, carry out complete anti-nitration reaction, mixed liquor in anoxia cell end about 40%~50% surmounts aerobic lattice and enters postposition anoxia cell, and another part mixed liquor enters aerobic lattice under plug-flow effect and nitrified.Then, nitrification liquid enters postposition anoxia cell, carries out short-cut denitrification reaction using additional sodium acetate as carbon source first, and and surmount sewage and enter subsequent anoxia cell together and complete Anammox reaction, finally, it is quiet it is heavy after discharge.The present invention is suitable for the processing of low C/N city domestic sewage and TN is required to reach the area below 10mg/L, stable effluent quality.Compared with conventional postposition anoxic denitrification filter tank, this technique can save aeration energy consumption and carbon source.
Description
Technical field
The present invention relates to a kind of apparatus and method of technology of biological membrane advanced nitrogen, belong to field of biological sewage treatment, fit
The technical field of sewage such as mark transformation, the processing of low C/N city domestic sewage are proposed for existing and newly-built sewage plant.
Background technique
Outstanding day by day with water body " eutrophication " problem, sewage drainage standard is constantly stringent, and sewage disposal technology is
Stage into the advanced treating stage that should remove organic matter denitrogenation dephosphorizing again for the purpose of single removal organic matter, with control
Denitrogenation dephosphorizing for the purpose of eutrophication processed has become one of the research hotspot of current sewage treatment field.Especially in recent years,
Some regional standards, in DB11/890-2012 (Beijing terrestrial reference A), the requirement for total nitrogen (TN) be less than 10mg/L hereinafter,
This is undoubtedly quite stringent for existing town sewage plant.Currently, conventional secondary process is difficult to meet sewage row
Standard is put, tertiary treatment process is needed to carry out advanced nitrogen, and denitrification bio-filter technique with nitric efficiency height and is accounted for because of it
The advantages such as ground area is small become the key technique that sewage plant upgrading uses.However, concentration of substrate is lower in secondary effluent
And most is organic matter difficult to degrade, and biodegradability is poor, and denitrification bio-filter need to additionally add carbon source, and general C/N is 5~
7 can be only achieved preferable removal effect, this undoubtedly makes originally, and just short of money sewage plant makes the matter worse.
Anammox (Anammox) technique has saving energy consumption, sludge yield low and many advantages such as denitrifying load is high,
It is the most economical efficient sewage water denitrification technology generally acknowledged in the world at present, principle refers under conditions of anoxic with NO2 -- N is
Electron acceptor is by NH4 +- N is converted into N2Process.It is obtaining for its substrate nitrite using the key of Anammox technology
It takes, there are mainly two types of approach at present: short distance nitration and short-cut denitrification.Short distance nitration refers to that using oxygen be electron acceptor by NH4 +-
N is oxidized to NO2 -The process of-N, but be difficult to stablize maintenance after its control condition complexity and acquisition nitrite, it is applied to effluent more
The processing of high temperature high ammonia-nitrogen wastewater rarely has the application of mainstream town domestic sewage；Short-cut denitrification refers to using organic matter as electronics
Donor is by NO3 -- N is reduced to NO2 -The process of-N, the process without complicated control condition and can be stable acquisition nitrous,
With huge application potential.Compared to rear-mounted denitrification filter tank, technique (PD- that short-cut denitrification is coupled with Anammox
ANAMMOX), a large amount of carbon sources can be saved, realize advanced nitrogen.
Technology of biological membrane is by the way that microbial cell is fixed on carrier surface, to realize microorganism residence time and water
The separation of power residence time, the presence of carrier filler play the role of water flow to force turbulent fluctuation, and biggish specific surface area promotes
Coming into full contact with for polluter and microbial cell, enhances mass transport process.Biofilm overcomes in activated sludge process easily to go out
The problems such as existing sludge bulking and Mud up-floating, has many advantages, such as that stable, anti-shock loading is strong, has been widely used in leading
Flow the processing of town domestic sewage.According to the streaming mode of filler, moving bed (MBBR) and fixed bed reactors are broadly divided into, are moved
The stereo hollow filler added in dynamic bed biofilm reactor can effectively withhold nitrifier and denitrifying bacterium, complete nitrification and anti-
Nitration reaction.However, the flowing of the waterpower as caused by mechanical stirring is it is easier that anaerobic ammonia oxidizing bacteria falls off, thus, use fixation
Bed technique withholds anaerobic ammonia oxidizing bacteria and is necessary.
Summary of the invention
It is an object of the present invention to provide a kind of apparatus and method for low C/N city domestic sewage advanced nitrogen, the devices
The microorganism residence time is separated using technology of biological membrane with hydraulic detention time with method, autotrophic bacterium is avoided and heterotroph exists
Contradiction in sludge age realizes the depth of sewage by AOA (Prepositive denitrification-nitrification-rear-mounted denitrification) reactor of pulling flow type
Denitrogenation.Firstly, raw water and the nitrification liquid of reflux enter anoxia cell, carbon source in raw water is made full use of, carries out complete denitrification
Reaction, the mixed liquor in anoxia cell end about 40%~50% surmount aerobic lattice and enter postposition anoxia cell, another part mixed liquor
Enter aerobic lattice under plug-flow effect to be nitrified.Then, nitrification liquid enters postposition anoxia cell, first using additional sodium acetate as carbon
Source carries out short-cut denitrification reaction and generates nitrite, and and the sewage that surmounts rich in ammonia nitrogen to enter subsequent anoxia cell together complete
Reacted at Anammox, it is last it is quiet it is heavy after discharge.
The device of AOA (PD-ANAMMOX) technology of biological membrane advanced nitrogen include including raw water box (1), anoxia cell I (4),
Anoxia cell II (5), anoxia cell III (6), aerobic lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10), postposition
Anoxia cell I (11), postposition anoxia cell II (12), postposition anoxia cell III (13), precipitating lattice (14) and carbon source dosing tank (18)；Water tank
(1) it is connect by intake pump (2) with anoxia cell I (4), anoxia cell III (6) is connect with aerobic lattice I (7), and aerobic lattice IV (10) are with after
Set anoxia cell I (11) connection；Carbon source dosing tank (18) passes through dosing pump (19) connection postposition anoxia cell I (11), anoxia cell III (6)
Surmounted pump (20) to be connected with postposition anoxia cell I (11), aerobic lattice IV (10) connect through reflux pump (21) with anoxia cell I (4)；It is good
Oxygen lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10) bottom are equipped with aeration plate (22), aeration plate (22)
It is connected with air blower (23)；Agitating device (3) are equipped in anoxia cell I (4), anoxia cell II (5), anoxia cell III (6)；Precipitate lattice
(14) top is equipped with overflow port (15), and lower part is equipped with emptying valve (24)；Anoxia cell I (4), anoxia cell II (5), anoxia cell III (6)
Polypropylene denitrification biologic packing material (25) is inside added, which is in fluidized state under agitating device (3)；Aerobic lattice I
(7), aerobic lattice II (8), aerobic lattice III (9), the interior polypropylene that adds of aerobic lattice IV (10) nitrify biologic packing material (26), the filler
Fluidized state is under aeration effect；Fixed polypropylene short-cut denitrification biologic packing material is set in postposition anoxia cell I (11)
(17), postposition anoxia cell II (12), be respectively provided with fixed polyurethane Anammox sponge filler (16) in III (13).
The method of AOA (PD-ANAMMOX) technology of biological membrane advanced nitrogen, comprising the following steps:
1) raw water from raw water box (1) through intake pump (2) enter anoxia cell I (4), enter together also from aerobic lattice IV
(10) the reflux nitrification liquid in, using the carbon source in raw water, in anoxia cell I (4), anoxia cell II (5), anoxia cell III (6) into
The complete denitrification of row.Control anoxia cell I (4), anoxia cell II (5), anoxia cell III (6) total hrt HRT be 3.0~
4.2h.Polypropylene denitrification suspended biological filler (25) is added in anoxia cell I (4), anoxia cell II (5), anoxia cell III (6),
Specific surface area is 200m2/m3~800m2/m3, density is 0.96~1.00g/cm3, packing ratio 30%~45%.
2) in anoxia cell III (6), 40%~50% mixed liquor is exceeded pump (20) and pumps to postposition anoxia cell I
(11), residual mixed liquor sequentially enters aerobic lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10), completes nitre
Change effect.Control aerobic lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10) total hrt HRT are
4.0~5.6h, DO concentration are 3~6mg/L.The nitrification liquid of aerobic lattice IV (10) is pumped through reflux pump (21) to anoxia cell I (4),
Reflux ratio is 100%~200%.Aerobic lattice I (7), aerobic lattice III (9), add in aerobic lattice IV (10) aerobic lattice II (8)
Polypropylene nitrifies suspended biological filler (26), specific surface area 200m2/m3~800m2/m3, density is 0.96~1.00g/cm3,
Packing ratio 30%~45%.
3) the remaining nitrification liquid of aerobic lattice IV (10) enters postposition anoxia cell I (11) under plug-flow effect, while entering
Also from the carbon source in carbon source dosing tank (18), short-cut denitrification reaction is completed.Control postposition anoxia cell I (11) HRT be
1.0~1.4h.It is arranged in postposition anoxia cell I (11) fixed polypropylene short-cut denitrification biologic packing material (17), specific surface area is
200m2/m3~800m2/m3, density is 0.96~1.00g/cm3, packing ratio 40%~50%.Carbon source dosing tank (18) internal carbon source
For sodium acetate, influent COD/NO is controlled3 -- N mass concentration ratio is 2.4~3.2.
4) surmount pump (20) to pump in anoxia cell III (6) 40%~50% water to postposition anoxia cell I (11), with postposition
Liquid mixing in anoxia cell I (11), the water outlet of postposition anoxia cell I (11) sequentially enters postposition anoxia cell II (12), postposition lacks
Oxygen lattice III (13) complete Anammox reaction.Fixation is respectively provided in postposition anoxia cell II (12), postposition anoxia cell III (13) to detest
Anaerobic ammonium oxidation polyurethane sponge filler (16), filler are the cube of 20~60mm, and void content is 85~95%, and specific surface area is
91000~30000m2/m3, packing ratio 20%~40%.Control the HRT of postposition anoxia cell II (12), postposition anoxia cell III (13)
For 2.5~3.5h.
5) water outlet of postposition anoxia cell III (13) enters precipitating lattice (14), quiet heavy.Supernatant is anti-from overflow port (15) discharge
It answers outside device, bottom precipitation sludge is periodically discharged by emptying valve (24), and the discharge period is 30~60d.
In conclusion device and the side of a kind of AOA (PD-ANAMMOX) technology of biological membrane advanced nitrogen of the present invention
Method has the advantage that
1) contradiction of each function bacterium inter-species sludge age in activated sludge process is overcome using technology of biological membrane.Without individually setting
Secondary settling tank and sludge reflux are set, occupied area and energy consumption are greatly reduced.
2) moving bed biological membrane technology (MBBR) is used in anoxia cell and aerobic lattice, filler is spun upside down with water flow, enhancing
The mass transport process of substrate.Fixed biofilm technology is used in postposition anoxia cell, enhances the withholding of anaerobic ammonia oxidizing bacteria.
3) compared with traditional rear-mounted denitrification filter tank, using PD-ANAMMOX technology, ammonia nitrogen and nitrate nitrogen can be removed simultaneously.One
Aspect, ammonia nitrogen surmount aerobic lattice, save aeration.On the other hand, nitrate reduction is only nitrous acid by short-cut denitrification technology
Carbon source is greatly saved in salt.
Detailed description of the invention
Fig. 1 is the device of AOA (PD-ANAMMOX) technology of biological membrane advanced nitrogen.
In Fig. 1: 1- raw water box；2- intake pump；3- agitating device；4- anoxia cell I；5- anoxia cell II；6- anoxia cell III；7-
Aerobic lattice I；The aerobic lattice II of 8-；The aerobic lattice III of 9-；The aerobic lattice IV of 10-；11- postposition anoxia cell I；12- postposition anoxia cell II；13-
Postposition anoxia cell III；14- precipitates lattice；15- overflow port；16- polyurethane Anammox sponge filler；17- polypropylene short distance is anti-
Nitrify biologic packing material；18- carbon source dosing tank；19- dosing pump；20- surmounts pump；21- reflux pump；22- aeration plate；23- air blower；
24- emptying valve；25- polypropylene denitrification biologic packing material；26- polypropylene nitrifies biologic packing material.
Specific embodiment
In conjunction with Fig. 1, embodiment of the present invention is further illustrated:
The device of AOA (PD-ANAMMOX) technology of biological membrane advanced nitrogen is equipped with raw water box (1), anoxia cell I (4), anoxic
Lattice II (5), anoxia cell III (6), aerobic lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10), postposition anoxic
Lattice I (11), postposition anoxia cell II (12), postposition anoxia cell III (13), precipitating lattice (14) and carbon source dosing tank (18)；Water tank (1)
It is connect by intake pump (2) with anoxia cell I (4), anoxia cell III (6) is connect with aerobic lattice I (7), aerobic lattice IV (10) and postposition
Anoxia cell I (11) connection；Carbon source dosing tank (18) passes through dosing pump (19) connection postposition anoxia cell I (11), anoxia cell III (6) warp
Surmount pump (20) to be connected with postposition anoxia cell I (11), aerobic lattice IV (10) connect through reflux pump (21) with anoxia cell I (4)；It is aerobic
Lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10) bottom are equipped with aeration plate (22), aeration plate (22) with
Air blower (23) is connected；Agitating device (3) are equipped in anoxia cell I (4), anoxia cell II (5), anoxia cell III (6)；Precipitate lattice
(14) top is equipped with overflow port (15), and lower part is equipped with emptying valve (24)；Anoxia cell I (4), anoxia cell II (5), anoxia cell III (6)
Polypropylene denitrification biologic packing material (25) is inside added, which is in fluidized state under agitating device (3)；Aerobic lattice I
(7), aerobic lattice II (8), aerobic lattice III (9), the interior polypropylene that adds of aerobic lattice IV (10) nitrify biologic packing material (26), the filler
Fluidized state is under aeration effect；Fixed polypropylene short-cut denitrification biologic packing material is set in postposition anoxia cell I (11)
(17), postposition anoxia cell II (12), be respectively provided with fixed polyurethane Anammox sponge filler (16) in III (13).
Municipal sewage of the sewage of this test process from Changping District, Beijing town, it is dirty for typical low ratio of carbon to ammonium city
Water, influent quality are as follows: COD concentration is 78.2~230.5mg/L, NH4 +- N concentration is 18.9~51.5mg/L, NO3 -- N and
NO2 -- N is respectively less than 0.5mg/L.Equipment therefor is tested as shown in Figure 1, being made of organic glass.
Concrete operations are as follows:
1) system starts: anoxia cell polypropylene denitrification biological suspended packing from pilot scale AAO-BAF anoxia cell filler,
The filler has good denitrification effect；Filler of the aerobic lattice polypropylene nitrification biologic packing material in pilot scale BAF, this is filled out
Material has good nitrification effect；Postposition anoxia cell polypropylene short-cut denitrification filler is by pilot scale AAO-BAF anoxia cell filler
Filler in SBR after long-term low C/N domestication, the filler have good short-cut denitrification ability；Polyurethane anaerobism ammonia oxygen
Changing sponge filler is that biofilm obtains in certain sewage plant Anammox pilot scale, the biofilm period 4~6 months.Startup stage, by AO
Operation is distinguished with postposition anoxic, AO is run using actual domestic wastewater；Postposition anoxic zone uses water distribution, makes anaerobic ammonia oxidizing bacteria
Gradually adapt to the water distribution of low substrate concentration；Two reactors are run simultaneously then, are intake as actual domestic wastewater.
2) raw water from raw water box (1) through intake pump (2) enter anoxia cell I (4), enter together also from aerobic lattice IV
(10) the reflux nitrification liquid in, using the carbon source in raw water, in anoxia cell I (4), anoxia cell II (5), anoxia cell III (6) into
The complete denitrification of row.Control anoxia cell I (4), anoxia cell II (5), anoxia cell III (6) total hrt HRT be 3.0~
4.2h。
3) in anoxia cell III (6), 40%~50% mixed liquor is exceeded pump (20) and pumps to postposition anoxia cell I
(11), residual mixed liquor sequentially enters aerobic lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10), completes nitre
Change effect.Control aerobic lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10) total hrt HRT are
4.0~5.6h, DO concentration are 3~6mg/L.The nitrification liquid of aerobic lattice IV (10) is pumped through reflux pump (21) to anoxia cell I (4),
Reflux ratio is 100%~200%.
4) the remaining nitrification liquid of aerobic lattice IV (10) enters postposition anoxia cell I (11) under plug-flow effect, while entering
Also from the carbon source in carbon source dosing tank (18), short-cut denitrification reaction is completed.Control postposition anoxia cell I (11) HRT be
1.0~1.4h.Carbon source dosing tank (18) internal carbon source is sodium acetate, controls influent COD/NO3 -- N mass concentration ratio is 2.4~3.2.
5) surmount pump (20) to pump in anoxia cell III (6) 40%~50% water to postposition anoxia cell I (11), with postposition
Liquid mixing in anoxia cell I (11), the water outlet of postposition anoxia cell I (11) sequentially enters postposition anoxia cell II (12), postposition lacks
Oxygen lattice III (13) complete Anammox reaction.Control postposition anoxia cell II (12), the HRT of postposition anoxia cell III (13) is 2.5
~3.5h.
6) water outlet of postposition anoxia cell III (13) enters precipitating lattice (14), quiet heavy.Supernatant is anti-from overflow port (15) discharge
It answers outside device, bottom precipitation sludge is periodically discharged by emptying valve (24), and the discharge period is 30~60d.
Test result shows: after system run all right, effluent COD concentration is 40~50mg/L, NH4 +- N concentration be 0~
0.5mg/L, NO3 -- N concentration is 0.8~4.6mg/L, and TN concentration is 3.8~9.2mg/L.
Claims (2)
- The device of 1.AOA (PD-ANAMMOX) technology of biological membrane advanced nitrogen, it is characterised in that: including raw water box (1), anoxia cell I (4), anoxia cell II (5), anoxia cell III (6), aerobic lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10), Postposition anoxia cell I (11), postposition anoxia cell II (12), postposition anoxia cell III (13), precipitating lattice (14) and carbon source dosing tank (18)； Water tank (1) is connect by intake pump (2) with anoxia cell I (4), and anoxia cell III (6) is connect with aerobic lattice I (7), aerobic lattice IV (10) It is connect with postposition anoxia cell I (11)；Carbon source dosing tank (18) passes through dosing pump (19) connection postposition anoxia cell I (11), anoxia cell III (6) are surmounted pump (20) and are connected with postposition anoxia cell I (11), and aerobic lattice IV (10) connect through reflux pump (21) and anoxia cell I (4) It connects；Aerobic lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10) bottom are equipped with aeration plate (22), aeration plate (22) it is connected with air blower (23)；Agitating device (3) are equipped in anoxia cell I (4), anoxia cell II (5), anoxia cell III (6)；It is heavy Lattice (14) top in shallow lake is equipped with overflow port (15), and lower part is equipped with emptying valve (24)；Anoxia cell I (4), anoxia cell II (5), anoxia cell III (6) polypropylene denitrification biologic packing material (25) is added in, which is in fluidized state under agitating device (3)；Aerobic lattice I (7), aerobic lattice II (8), aerobic lattice III (9), the interior polypropylene that adds of aerobic lattice IV (10) nitrify biologic packing material (26), the filler Fluidized state is under aeration effect；Fixed polypropylene short-cut denitrification biologic packing material is set in postposition anoxia cell I (11) (17), postposition anoxia cell II (12), be respectively provided with fixed polyurethane Anammox sponge filler (16) in III (13).
- 2. the method that application device as described in claim 1 carries out advanced nitrogen, which comprises the following steps:1) raw water from raw water box (1) through intake pump (2) enter anoxia cell I (4), enter together also from goodReflux nitrification liquid in oxygen lattice IV (10), using the carbon source in raw water, in anoxia cell I (4), anoxia cell II (5), anoxia cell Complete denitrification is carried out in III (6)；Control anoxia cell I (4), anoxia cell II (5), anoxia cell III (6) total hrt HRT For 3.0~4.2h；Polypropylene denitrification suspended biological is added in anoxia cell I (4), anoxia cell II (5), anoxia cell III (6) to fill out Expect (25), specific surface area 200m2/m3~800m2/m3, density is 0.96~1.00g/cm3, packing ratio 30%~45%；2) in anoxia cell III (6), 40%~50% mixed liquor is exceeded pump (20) and pumps to postposition anoxia cell I (11), remains Remaining mixed liquor sequentially enters aerobic lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10), completes nitrification； Control aerobic lattice I (7), aerobic lattice II (8), aerobic lattice III (9), aerobic lattice IV (10) total hrt HRT be 4.0~ 5.6h, DO concentration are 3~6mg/L；The nitrification liquid of aerobic lattice IV (10) is pumped through reflux pump (21) to anoxia cell I (4), reflux ratio It is 100%~200%；Aerobic lattice I (7), aerobic lattice III (9), add polypropylene in aerobic lattice IV (10) at aerobic lattice II (8) It nitrifies suspended biological filler (26), specific surface area 200m2/m3~800m2/m3, density is 0.96~1.00g/cm3, packing ratio 30%~45%；3) the remaining nitrification liquid of aerobic lattice IV (10) enters postposition anoxia cell I (11) under plug-flow effect, while entering also Carbon source in carbon source dosing tank (18) completes short-cut denitrification reaction；Control postposition anoxia cell I (11) HRT be 1.0~ 1.4h；Fixed polypropylene short-cut denitrification biologic packing material (17), specific surface area 200m are set in postposition anoxia cell I (11)2/m3 ~800m2/m3, density is 0.96~1.00g/cm3, packing ratio 40%~50%；Carbon source dosing tank (18) internal carbon source is acetic acid Sodium controls influent COD/NO3 -- N mass concentration ratio is 2.4~3.2；4) surmount pump (20) to pump in anoxia cell III (6) 40%~50% water to postposition anoxia cell I (11), with postposition anoxic Liquid mixing in lattice I (11), the water outlet of postposition anoxia cell I (11) sequentially enter postposition anoxia cell II (12), postposition anoxia cell Anammox reaction is completed in III (13)；Fixed anaerobism ammonia is respectively provided in postposition anoxia cell II (12), postposition anoxia cell III (13) It aoxidizes polyurethane sponge filler (16), filler is the cube of 20~60mm, and void content is 85~95%, and specific surface area is 91000~30000m2/m3, packing ratio 20%~40%；Control the HRT of postposition anoxia cell II (12), postposition anoxia cell III (13) For 2.5~3.5h；5) water outlet of postposition anoxia cell III (13) enters precipitating lattice (14), quiet heavy；Reactor is discharged from overflow port (15) in supernatant Outside, bottom precipitation sludge is periodically discharged by emptying valve (24), and the discharge period is 30~60d.
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| US11479491B2 (en) | 2019-11-27 | 2022-10-25 | Suzhou University of Science and Technology | Integrated wastewater treatment apparatus and method |
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Application publication date: 20190618 Assignee: SHENZHEN LIYUAN WATER DESIGN & CONSULTATION Co.,Ltd. Assignor: Beijing University of Technology Contract record no.: X2022990001005 Denomination of invention: AOA (PD-ANAMMOX) biofilm technology deep nitrogen removal device and method Granted publication date: 20211026 License type: Common License Record date: 20221230 |
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Application publication date: 20190618 Assignee: Shenzhen Wanmu Water Co.,Ltd. Assignor: Beijing University of Technology Contract record no.: X2024980003481 Denomination of invention: Device and method for deep denitrification using AOA (PD-ANAMMOX) biofilm technology Granted publication date: 20211026 License type: Common License Record date: 20240326 |
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